Exactly the same, but in the first try, you'll have tightened the truss rod and in the second you'll have untightened it, or the opposite if it's a left thread.
In my first message to the OP, I wrote "unscrewing" instead of anything else to release the tension on the truss rod, as, to me, for a beginner, it was the most obvious explanation.
But I know some people don't know in which direction to go to screw or unscrew, then they should let a professional do the job...